Paste applying apparatus



Feb. 20, 1940. A. A. BEACH PASTE APPLYING APPARATUS Filed April 30, 1938ATTORNEYS Patented Feb. 20, 1940 UNlTED STATES PATENT orrics PASTEAPPLYING APPARATUS Almeron Allan Beach, Hobart, N. Y. Application April30,1938, Serial No. 205,143

2 Claims.

This invention relates to paste applying machines, especially thosedesigned for use by wall paper hangers in applying paste to wall paper.Although numerous attempts have been made i to design paste applyingmachines suitable for use by wall paper hangers, none of them has goneinto general use. The reason for this, apparently, is that none of theprior art machines has saved much time in the preparation of the paperfor hanging and furthermore none has been adaptable to meet the varyingconditions presented by different kinds and weights of wall paper. Thepresent invention aims, therefore, to provide a paste applying machine,especially adapted for use in applying paste to wall paper, which is sodesigned and constructed that the paper can readily be placed inposition in the machine for the application of the paste to successivestrips thereof of any desired length drawn directly from the roll andwhich, furthermore, is so designed and constructed that it will quicklyapply, evenly and uniformly, paste of the amount and thickness requiredfor the particular grade and weight of paper being hung.

An important feature of the invention is the arrangement of the partswhich direct the paper over the paste applying roll and through thepaste evening and gauging mechanism so that when a new roll of paper isto be placed in position in the paste applying machine it is unnecessaryto thread the paper through any part of the apparatus, thereby providinga considerable saving of time in the preparation of the apparatus foruse.

Another important feature of the invention is the provision of mechanismfor insuring uniform distribution and at the same time determining thethickness of the layer or ridges of paste to be left upon the paper,which can readily be adjusted to vary the layer or ridge thickness tomeet the conditions presented by the character and weight of theparticular paper that is to be hun Another important feature of theinvention is the provision of a ridge-forming or grooving device, whicheifects a preliminary treatment of the paste after it has been appliedby the paste applying roll to cause it to be formed in ridges, incombination with a scraper or doctor which can be brought into suchdifferent relations to the path of travel of the paper, as it leaves theridgeforming device, that the height of the ridges can be varied by(cutting off more or less of the tops thereof, thus varying the.ultimate thickness of the layer or ridges of paste left upon the paperas it is pulled from the machine.

Other objects and important features of the invention will appear fromthe following description and claims, when considered in connection withthe accompanying drawing, in which Figure Us a plan view of the machine,with a portion of the cover and of the guide rolls carried by the coverbroken away to show more clearlythe parts beneath;

Figure 2 is an end elevation of the machine, with parts broken awayshowing the machine as it is prepared for carrying from one job toanother;

Figure 3 is a side elevation of the machine,

with parts broken away to show theinterior construction and with thecover and the attached guiding rolls in open positionto illustrate themethod of placing the paper from a new roll in position to be pulledthrough the machine by the paper hanger; f j t Figure 4 is a section onthe line 4-4 of Figure 1;

Figure 5 is a front elevation, with parts broken away, of thepaste-grooving or ridge-forming device and the associated scraper ordoctor;

Figure 6 is a section on the line 66 of Figure 5 showing the method ofadjusting the ridgeforming device and the associated scraper or doctorto produce the desired thickness of paste on the paper, the adjustmentshown in Figure 6 being for a comparatively thin layer of paste;

Figure 7 is a section similar to Figure 6 showing the parts adjusted toprovide a thicker coating of paste, the wing nut and the slot providingfor the adjustment being superimposed in dotted lines upon this figureand also upon Figure 6 to illustrate the manner in which the adjustingmeans provides for the different adjusted positions and Figure 8 is adetail view showing the lock for holding the coverwith its attachedguide rolls in closed or paper-guiding position.

In the illustrative embodiment of the invent-j tion, a sheet metalcasing or container 2 ofa length suflicient to handle the ordinarywidths of wall paper has a bottom provided with a well portion 4,preferably of a curvature concentric with the curvature of thepaste-applying roll 6, and also provided with two inclined portions 8and I0 sloping toward the well portion 4, the ends I2 and I4 of thecasing preferably extending below the bottom of the casing to providefor level support of the casing when placed on a lower sides of theguide rolls B l and 36.

in Figure 2, a handle 22 being provided for carrying the casing in thisposition.

It will be noted that the integral cover part 20 extends into proximityto the roll 6. To avoid any exposed sharp edges, the edge of theintegral cover part 20 adjacent to the roll 6 is preferably incurved asshown at 24.

A movable cover 26 is provided at one end 38 with hinge members 28turning on a hinge pin 30 held in stationary hinge members 32 attachedto the end l2 of the casing :2. The cover 26 is shaped to clear the roll6, being curved in this part so that it is substantially concentric withthe roll 6. Near its front the covertop is spaced 'sufiici'ently fromthe top edge of the casing 2 to provide for guide rolls 34 and 36 whichhave trunnions at their ends extending through the end walls 38 and Mlof the cover, as shown particularly in Figure 4. e

The rear edge of the top portion of the cover is curved upwardly at tito provide a rounded hearing for the wall paper it coming from the roll46. The rounded bearing d2 holdsthe wall paper down as it enters thespace between the roll 8 and the cover '26 so that the paper will travela considerable distance in contact with the roll it, the paper beingheld down on the other side of the roll by the guide roll 3d.

The'guide rolls 3t and 36 are spaced sui'nciently to permit theprojection therebetween of the paste-distributing and gauging means,comprising the ridge-forming or pasterooving device it and itsassociated doctor or scraper 55) carried by the casing 2. Theridge-forming part of the paste-distributing and gauging means, asherein shown, comprises a strip of metal bent into U shape in crosssection to form a bar extending across the casing 2 with the curved partof the U extending slightly above a plane tangent to the Slots 52 arecut through the curved bottom of the U of the'ridge-forming or groovingbar so that the paper-engaging side thereof presents a series ofalternating slots and rounded teeth 54 which act after the manner of acomb to form alternating ridges and grooves in the paste 55 on the underside of the wall paper as the paper is drawn over the grooving orridge-forming bar 48 after it has traveled over the paste-applying roll6, thereby simulating to some extent the effect produced when paste isapplied by abrush in the usual manner. The open or hollow constructionof the comb bar id prevents clogging with paste and contributes to moreuniform distribution of the paste. I

1 The slots 52 in the toothed bar 28 are preferably sufiic ently deep sothat the bar 43 simply forms ridges in the paste regardless of itsthickness. In order, however, to insure a uniform thickness of the pasteon the underside of the paper and also to reduce thickness if too muchpaste has been applied by the roll, a doctor or scraper t provided,which has its upper edge spaced somewhat from the toothed bar it so asto provide for the convenient discharge back into the casing 2 and wellt of any excess paste removed thereby.

Both the ridge forming bar 48 and the doctor 5t are connected at theirends to supports 58 and 60 mounted on trunnicns 62 and 64 extending axisof the trunnions 62 and 54 to bring the ridge former and doctor intodifferent relations to the paper passing thereover or, in other words,-shown in Figures 6 and 7, so to tilt them with respect to the path oftravel of the paper, as it passes between the guide rolls 3d and 36,that the doctor or scraper 5% will be spaced more or less from the underside of the paper in order to leavea greater or less thickness of pasteupon the paper. The ridge former and associated doctor may be secured intheir different adjusted relations to the paper passing thereover by awing nut it screwed upon the end of the stud 66.

The roll of paper 56 may conveniently be supported upon the casing, inposition for unwinding, by brackets F5 2 and 14 attached to the upperside of the integral cover portion 20, these brackets being providedwith slots in which a rod it may rest after it has been threaded throughthe center of the paper roll.

he paste roll 6, for convenience in removal,

has one of its trunnicns F8 extended into a socket bearing 85) anditsother trunnion 82 resting in an open bearing 8% and confined againstmovement up out of the bearing by the overhanging edge of a leaf spring89 that can be pushed back against the side M of the casing when it isdesiredto remove the roll ii for cleaning either the roll orthe casingitself.

From the foregoing description the operation of the device will readilybe understood. When a new roll of paper is to be placedin position forapplying paste to successive strips unwound therefrom, the rod 7E, whichhas a handpiece ll for convenient manipulation thereof, is threadedthrough the roll' 46 and is then placed in the slotsin the brackets 12and "M. The cover Zacarrying the guide rolls 34 and 35, is swung intothe position shown in Figure 3, a support 88 for the cover in thisposition being provided adjacent to the stationary hinge member Aportion of the'paper is then unwound from the roll 46, drawn over thetop of the roll 6 and over the top of the toothed bar or ridge former'48 and the doctor 59 and a sulncient distance beyond the front edge ofthe casing .2 to allow it to be gripped by the'paper hanger, and thenthe cover 26 is brought down into its closed position whichcausestherounded part 42 of the cover to press down on the paper behind the rolland causes the guide rolls t t and 35 to engage the paper on each sideof the ridge former 48 and doctor 59 and bring the paper down intoengagement with these two members.

The paper being now in position to have the paste! applied thereto, thepaper hanger simply grips the portion thereof projecting beyond thefront'edge of the casing in Figure 4 and draws through the machine thedesired length to be applied and then cuts it off, this movement'effooting a rotation of the roll 6 which app-lies paste to the underside of the paper, which paste is then groovedand ridged by the ridgeformer 48 and is then engaged by the doctor 50 to reduce it to thedesired thickness and amount for the particular grade of paper beinghung.

When the apparatus isto becarried from one job to another it isdesirable, in order that the apparatus may be set down upon the flatside, to provide for the swinging of the brackets 12 and 14 into theposition shown for the bracket 12 in Figure 2 of the drawing. Tofacilitate this,

these brackets are provided with open slots I02 adapted to receive thethreaded studs I04 on which the winged clamping nuts I06 are screwed toclamp the brackets in their paper roll supporting position. In order tohold the brackets frictionally in the position shown in Figure 2 theother stud or rivet [08 on which the bracket turns into its inoperativeposition is provided with a friction washer H0 of any suitable frictionmaterial.

Among the practical advantages of this machine, it will be noted that itoflers very little resistance to the pull of the paper through themachine and therefore it can be used with all grades of paper, includingeven the thin'and cheap grades. Moreover, the thickness and uniformityof the coating of paste is in no Way affected by the speed at which thepaper is pulled through the machine.

What is'claimed as new is:

1 A wall paper paste applying machine comprising a paste receptacle, apaste applying roll a mounted on said receptacle, arranged to dip intothe paste therein andover which the paper travels to receive the paste,means upon'the two a predetermined arc of contact with said roll, meansat one side of said roll for efiecting a predetermineddistribution ofthe paste coating on said paper and its reduction to a predeterminedthickness, meansfor directing the wall paper into operative relation tosaid distributing provided at that side with a fixed cover portion toprovide a paste-receiving compartment when the receptacle is turnedthrough 90 for carrying from one job to another, means for confining thepaper to a predetermined arc of contact with said roll and a movablecover for that part of the receptacle in which the roll is located,

said cover being hinged at one end of said re ceptacle and saidconfining means being mounted on said cover to swing therewith bodilyinto and out of confining relation to the paper.

ALMERON ALLAN BEACH.

sides of said roll for confining the paper to position of the receptacleand over which the paper travels to receive the paste, said receptacleextending to one side of saidroll and being- 0 x

